solution:

Peat is shaped from the wetland vegetation particularly from the Sphagnum (lowland greenery).

Sphagnum likes to fill in acidic nature in the lowland, because of the acridity the total corruption of the cell couldn’t occur because of the presence of less number of microscopic organisms. Sphagnum takes-up water from the dead hyaline pores and holds a lot of water. Because of the fossilization of Sphagnum, Peat is framed.